Lock



" A ril 12, 1932. 7 F, BmGGg 1,853,036

LOCK

Original Filed April 14, 1926 2 Sheets-Sheet 1 LOCK Original Filed April 14, 1926 2 Sheets-Sheet 2 l" Z? 1 j/ 1/ ya @Mw 0/ 5taphan REr1qq5 Patented Apr. '12, 1 932 NIT D STATES; P NT?oFFIoE STEPHEN FLIBRIGGS, or", MILWAUKEE, WISCONSIN, ASSIGNOR To nnmesa sTRA'r'roN CORPORATION, OF MILWAUKEE, -WISCONSIN,JA CORPORATION QF'DELAWARE LocK "Original application filed April 14,"1 e2e, s ria1 No. 101,980. Divided and this application, filedsepte mberi 19,1937. Serial No; 220,462. Y a

This invention" relates to certain new and useful improvements in looks and is a division of my application filed April 14,1926,

' Serial No.'101,980.'

1 It is an'object of this invention" to provide an improvedlock which is so designed and constructed as to make it compulsory that the key be Withdrawn be'torethe full unlock-v ing movement of the mechanism can. be .ac-

' complished.

A further object of'this invention resides in'the provision of an improved lock of the character described havingmeans prevent-v ing the insertion ofa key'in' the lock except when in locked position and meansafor pre venting the full unlocking. movement of the mechanism while the. key is engaged with the mechanism; v T Inasmuch as the value of various locking devices isfrequentlynullified by the careless ness of drivers in leaving. the keys in the looks when they are absent from the automobile, it. is a still further object of this invention to provide an improved lock which is designed torequire the removal of the key to unlock.

the mechanism,'the lock..being moved to i to obstruct the insertion ofthe key While the locked position Without the aid-o1 a key and mechanism is in unlocked position.

With the, above'and other objects in .view

which will appearv asithedescription proceeds, my inventionresides in the novel con struction, combination and arrangement of v parts substantially as hereinafter described and more particularly defined by the appended claims, it being understood that such changesvinlthe precise embodiment of the hereindi'sclosed invention may be made as come within the scope of the claims.

In the accompanying drawings, I have illustrated one complete example of the physical embodiment of my invention constructed according tothe best mode I have so far devised forthe practical application of the principles thereof, 'and'in which:

Within an ignititon'icircuit;

Figure 3 is a top planview of a portion of ,s

a transmission cover having the locking bar-H rel mounting head secured therein; 7 i F igure 4: 13 a fragmentary. detailed view,

partly in section and partly in elevation, il-. 00

lustrating the lock mechanism at the end of its initial opening movement prior to the re-,' moval of the key to permit'completion of the unlocking movement; i g

Figure 5 is a view, partly in top plan and partly in' section, taken through Figure 6 on the plane of the linen-,5 and illustrating the, a manner inxwhichthe insertion of the key is prevented while the mechanism is in 1111-; locked position; i 7

.Figure 6 is a view similar to Figure 4 illus,- traping the, mechanism in unlocked mp Figure 7 is a fragmentary, detailed view, partly in section and partlyin'elevation, il-s' lustra-ting the dust cap or cover and its mechanism for preventing movement of the same free of the lock cylinder key slot when the mechanism is in unlocked position,

Referring .noW particularly to the accompanying drawings, in which like numerals designate like parts throughout the several views, 5 designates a bonnet portion formed on the cover 6 of a transmission housing? in which suitable,geardevices, not shown, are mounted, the gear devices-providing the changespeed for the conventional automo- I tive vehicleandbeing operated selectively Figure 1, inthe wall of bore 22 when r is at its innermost or locked position. The

engaged.

The rods 8 are slidably journaled in bear ings 13 formed in the cover 6 and have recesses or channels adapted to register with a transverse bore or opening 15 in the cover when the gear is in neutral position to facilitate the engagement therein of pin members 16. The pin members 16 have their outer ends tapered and are adaptedto be spread to engage withthe rod recesses 14 by an actuating pin or rod 17 slidably mounted in a bore 18 intersecting the bore 15, as best shown in Figures 1 and 2. p p

The actuating rod or pin 17 is controlled by a locking device 19 mounted at a point convenient to the driver of the vehicle, which is illustrated in the drawing as a boss or enlargement 20 formed as a continuation of the bonnet 5. The bore 18 is enlarged in diameter at its medial portion, as at 21, and at its extreme outer end is further enlarged in diameter in the boss 20 where it receives the lockingdevice, as at 22, the shoulder 23 formed at the juncture between the bores 21 and 22 providing a rest or support for an insulating plate or disc to be later described. v

A lockbarrel mounting head 25 is slidably mounted in the bore 22 and the actuating pin or rod 17 is connected therewith so that longitudinal movement of the head 25 imparts a similar movement to the actuating pin. The'head 25 is secured against rotation in the bore 22, but is'permitted a limited longitudi nal movement, by a guide pin or stud 26, see Figure 2, extended into the bore 22 and engaging a guide slot or opening 27 .in the side of themounting head, the longitudinal movement of the lock barrel mounting head being limited by the length of the slot 27.

A locking pin 28 is transversely slidable inthe lowerportion of the lock barrel mounting head and is projectable from the side thereof to engage -a locking recess 29. see the head locking pin 28 is extendahle from and retractable into the head in a manner customary in constructions of this character. The plug 30 has the usual opening or slot 31 in which a key 32 is insertable to free the tumblers. not shown, normally securing the plug 30 against rotation with the locking pin 28 extended into recess 29 to hold the mounting head fast in the position illustrated in Figure 1. I

The insertion of the key 32 in the slot 31 aligns the tumblers, not shown, to permit rotation of the plug 30, and rotation of the plug through approximately ninety degrees retracting the locking pin 28 to permit the head to move upwardly in the bore 22, carryin with it the actuating pin 17. The upwar movement of the lock barrel mounting head is accomplished by an extensile spring 33 confined between the inner end of the mounting head and an insulator washer or disc 34 disposed over a pair of contacts 35 carried by the insulator member 2 The contacts 35 are of the spring finger type and normally bear against the upper end portion of the actuating pin 17 on which a suitable insulator sleeve 36 is mounted, as best illustrated in Figure 6, the lower portion of the sleeve having a metallic ring or contact member 37 embedded therein. 'hen the mounting head is in its locked position, see Figures 1 and 2, the contact fingers engage the insulating portion of the sleeve 34 and when the mounting head is in its 'unlocked or raised position, see Figure 6, the contact fingers ride onto the metallic ri 37 and are thus electrically bridged. Eaiild contact fin er 35 is electrically connected with a terminal block 38, see Figure 1, mounted below the floor boards 39 of the vehicle, by conductors 40, which are included in the ignition system of the motor, indicated diagrammatically at 41, see Figure 2, so that with the mounting head 25 in its upper position the contact fingers-35 are bridged and the ignition system circuit is completed.

Vhile a majority of the present day automotive vehicles are equipped with mechanism locks of various types, thepurpose thereof is nullified either by the failure of the driver to lockthe same when leaving the vehicle or by the careless leaving of the key in the look. This carelessness of drivers invites theft of cars and this invention provides means to make it essential that the transmission, or other mechanical device,be locked before the ignition system of the car can be interrupted to stop the motor, and which is further designed to make it essential that the key be first removed before the ignition system circuit can be completed and which has a barrier against the reinsertion of the key until the mechanism is moved to locked .position.

This is accomplished by providing an auxiliary means, actuated in the present instance, from a dust cap-or cover 42 pivotally mounted by a pin 43 and normally urged over the plug 30 by a spring 44, see Figures 3 and 5. The cover isfixed to the pin 43, as at 45, so that it turns therewith, and the pin is rotatably mounted in the lock barrel mounting head, as best illustrated in Figures 4 to 7, the mounting head having a slot or opening 46 in register with the bore in which the pin 43 is mounted to receive'a cam or tail locking, piece 47 fixed to the pin inner end, as best shown in Figures 5 and 7. The

spring 44 normally urges the dust cover over cap or cover from its normal position over the plug by the'insertion of a key in the plug moves the free end of the cam 47 out wardly of its recess 46 into a recess 48 in the wall of the bore 22, provided the mounting head is in'its lowermost or locked position, as later described.

The depth of the recess 48 is greater than the thickness of the cam 47 and its lower end is on a plane to alignwith the lower surface of the cam when the lock barrel mounting head is in its lowermost or locked position and its upper end is disposed on a plane so that when the top surface of the camabutts the same, the locking pin 28 will be :out of alignment with its recess 29. Consequently, when the key 32 is inserted in the lock, cam 47 is automatically projected into the recess 48 so that when the key is rotated to retract the locking pin 28 from its recess the mounting headis permitted a limited'movement toe ward unlocked position by the spring 33, this movement being limited by the depth of the recess 48.

As the lock barrel mounting head reaches the upper limit .of its initial movement, key 32is withdrawn, the locking pin 28 being prevented from reengaging its recess due to the disalignment of the two, and the dust cover or cap is moved over the mounting head by its spring 44 retracting the cam 47 into its recess 46 freeing the lock barrel mounting head for continued movement toward unlocked position by the spring 33.

The outward movements of the mounting head by the spring 33 is limited by the pin stud 26 abutting the lower or innermost end of the groove 27 and when the mounting head reaches its outer limit of movement, the lower end of the pin 17Vwill be above the inner'ends of the pins 16, releasing the transmission lock,'and the contact ring 37 will be between the spring contact fingers bridging the same to complete the ignition circuit.

The reinsertion of thelkey in the look at this point is prevented by the wall of the bore 22 preventing movement of the cam 47 out Wardly of its recess 46 and consequently'the dust cap or cover as is secured over the plug, 30. When it is desired to open the ignition circuit, the operator depresses the lock barrel mounting head against the spring 33 and as it reaches its lower limit of movement the locking pin 28,-by reason of its sprin not j shown,

o c I engages 1n llZS locking recess and the mechanism is locked. proper key in the plug 30 to unlock the mechanism is unhindered while the parts are in The insertion of a,

n this. position due to the alignment of the cam 47 with therecess 4:8. 7 Y I I In some instances it may be desirable .to so construct the look as. to release the mechan ,ical drive without completing. the ignition circuit and thishmay be accomplished'by shortening the actuatingpin 17 so that when the lock proper has been moved to its. initialunlocking position with the cam or-tail-i? enlocking pins 16 are free of the transmission rod recesses 14:.

gagingtheupper end of, its recess ,48,the

From the foregoing description takenrin 7 means, an actuating member for the locking 'means having a key receiving opening,said actuating member being freefor movement toward unlocking position upon its release, 3 i

by a proper key, means restraining said membeyond an" intermediate point, means automatically operable upon the withdrawal of the key from the actuating member to 'free said actuating, member for continued move- 'ment to unlocked position, and means preventing the insertion of the key while the member is in full unlocked position.

2. A lock device, comprising a board stationary part having two locking recessescomher from movement to full unlocked positionmunicating with the bore, a lockcylinder mounting head longitudinally slidable in the bore, a :key controlled lock cylinder in the,

mounting head, a locking pin transversely slidable in the head and engageable in one lockingrecess when the mounting head is at one limit of movement, a lock cylinder dust cover normally disposed over the mounting head, a rod journaled in the'mounting] head and having said cover fixed to its outer end, a locking piece fixed to the inner end of said rod and normally retracted to lie within the circumference of the mounting head periphery when the cover is disposed over the mounting head outer face, the lockrecess by a key inserted in the lock cylinder and ,themovement of the cover to permit the insertion of the locking key rotating said rod and projecting the locking piece into the other locking recess, said other recess being of a greater width than the locking piece to ing pin being disengaged from its locking over the mounting head retracting the looking piece Within the circumference of the mounting head to tree the mounting head for continued movement to full unlocked position, and the wall of the bore preventing the movement outwardly of the locking piece and consequently the movement of the cover member from over the mounting head to prevent the reinsertion of a key in the mounting head when the same is in full unlocked position.

In testimony whereof I hereunto affix my signature.

STEPHEN F. BRIGGS.

team 

